EP2566445B1 - Novel self-reversible reverse latex, and use thereof as a thickening agent in a cosmetic composition - Google Patents

Description

The present application relates to self-reversing water-in-oil inverse latexes, their method of preparation and their application as a thickener and / or emulsifier for skin care products, scalp and hair or for the manufacture of preparations. cosmetics, dermopharmaceuticals or pharmaceuticals.

Inverse polyelectrolyte latices including 2-methyl 2 - [(1-oxo-2-propenyl) amino] 1-propanesulfonic acid (also known as 2-acrylamido-2-methylpropanesulfonic acid, ATBS or AMPS) partially or totally salified , as well as their use in cosmetics and / or pharmacy have been the subject of many patent applications. However, the presence of significant amounts of water and oil in these inverse latexes represents a significant disadvantage in terms of volume, cost and sometimes increased risks and / or toxic effects.

Solutions have therefore been developed for increasing the concentration of polyelectrolytes in the final inverse latices, for example by subjecting the reaction medium, at the end of the polymerization, to a vacuum distillation stage to remove a greater or lesser portion of water and water. 'oil. This distillation is however difficult to implement because it often induces a destabilization of the inverse latex which must be countered by the prior addition of stabilizing agents.

European patent applications EP 0 161 038 and EP 0 126 528 as well as the British patent application GB 1,482,515 disclose such use of stabilizing polymers.

The disadvantage of these stabilizing polymers is that they contain alcohols or glycols which can induce environmental problems. In addition, it sometimes occurs that the reaction medium becomes solid during the distillation step, without this phenomenon having really been explained, but the undeniable consequence of which is the destruction of the batch of inverse latex during manufacture. and a painful and expensive cleaning of the reactor used. Finally, even when the distillation proceeds correctly, the inverse latexes obtained are often inverted with difficulty when they are used in an aqueous phase. They also have a high viscosity and sometimes within them micro-gels. These disadvantages therefore prohibit their use in the manufacture of cosmetic formulations. To overcome these drawbacks, the inventors have developed an inverse latex disclosed in the French patent application published under the number FR 2,879,607 comprising from 50% to 80% by weight of a polyelectrolyte comprising from 0.01% to 10% by weight of at least one monomeric unit derived from the compound of formula (A):

C (R ₁ ) (R ₃ ) = C (R ₂ ) -C (= O) -O- (CH ₂ -CH ₂ -O) _n -R ₄ (A)

in which the radicals R ₁ , R ₂ and R ₃ , which are identical or different, represent, independently of each other, a hydrogen atom or a linear or branched alkyl radical containing from 1 to 4 carbon atoms, the R 4 radical represents an aliphatic radical; linear or branched, saturated or unsaturated, having from 6 to 30 carbon atoms and n represents a number inclusive between 1 and 50.

However, when this inverse latex is used to prepare a thickened formulation, its rate of inversion in the aqueous phase, that is to say the time required to obtain the maximum development of the viscosity, remains rather low. which means for the user a waste of time which is harmful in industrial phase. Indeed, it is well known that the inversion time of the inverse latices increases considerably according to the scale of use. Moreover, the stability over time of the inverse latexes described in FR 2,879,607 is not totally satisfactory. Indeed, there is a phenomenon of syneresis with appearance of oil on the surface and a pellet-based polymer fast enough during storage.

The inventors have therefore sought to develop reverse latices that do not have the aforementioned drawbacks.

1. a) - De 50% massique à 70% massique d'un polyélectrolyte anionique (P) réticulé, obtenu par polymérisation :
   • D'au moins un monomère neutre de formule (I) :
     
     dans laquelle le radical R1 représente un radical aliphatique linéaire ou ramifié, comportant de 8 à 20 atomes de carbone et n représente un nombre supérieur ou égal à un et inférieur ou égal à trente ;
   • D'au moins un monomère neutre choisi parmi l'acrylamide, le N,N-diméthyl acrylamide, le N-[2-hydroxy-1,1-bis(hydroxyméthyl)éthyl] propènamide [ou tris(hydroxyméthyl) acrylamidométhane ou N-[tris(hydroxyméthyl) méthyl] acrylamide dénommé aussi THAM] ou l'acrylate de (2-hydroxy éthyle) ; et
   • D'au moins un monomère comportant une fonction acide fort et/ou d'au moins un monomère comportant une fonction acide faible ;
2. b) - De 4% massique à 10% massique d'un système émulsionnant (S₁) de type eau dans huile (E/H) ;
3. c) - De 1% massique à 10% massique d'un système émulsionnant (S₂) de type huile dans eau (H/E) comprenant une proportion massique non nulle d'une composition tensioactive (C), ladite composition tensioactive (C) comprenant pour 100% molaire :
   1. 1) - Une proportion supérieure ou égale à 10% molaire et inférieure ou égale à 50% molaire d'une composition (C_II) comprenant pour 100% molaire :
      • α) - De 60% molaire à 100% molaire d'un composé de formule (II) :
        
        dans laquelle :
        • R2 représente un radical alkyle linéaire ou ramifié, comportant de 12 atomes de carbone,
        • T₁, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m1-H dans lequel m1 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T₂ identique ou différent de T₁, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m2-H dans lequel m2 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
        • T₃ identique ou différent de T₁ et de T₂, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m3-H dans lequel m3 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • étant entendu que la somme m1 + m2 + m3 est supérieure à 0 et inférieure ou égale à dix ; β) - Optionnellement jusqu'à 40% molaire d'un composé de formule (II') :
          
        dans laquelle :
        • R'₂ représente un radical alkyle linéaire ou ramifié, comportant 14 atomes de carbone,
        • T'₁, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m1-H dans lequel m1 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T'₂ identique ou différent de T'₁, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m2-H dans lequel m2 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
        • T'₃ identique ou différent de T'₁ et de T'₂, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m3-H dans lequel m3 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • étant entendu, que la somme m1 + m2 + m3 est supérieure à 0 et inférieure ou égale à dix ; et γ) - Optionnellement jusqu'à 10% molaire d'un composé de formule (II") :
          
        dans laquelle :
        • R"₂ représente un radical alkyle linéaire ou ramifié, comportant 16 atomes de carbone,
        • T"₁, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m1-H dans lequel m1 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T"₂ identique ou différent de T"₁, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m2-H dans lequel m2 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
        • T"₃ identique ou différent de T"₁ et de T"₂, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m3-H dans lequel m3 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • étant entendu que la somme m1 + m2 + m3 est supérieure à 0 et inférieure ou égale à dix ;
   2. 2) - Une proportion supérieure ou égale à 50% molaire et inférieure ou égale à 90% molaire d'une composition (C_III) comprenant pour 100% molaire :
      • α) - De 60% molaire à 100% molaire d'un composé de formule (III) :
        
        ou de son isomère de formule (IV) :
        
        ou du mélange de ces deux isomères,
        formules (III) et (IV) dans lesquelles :
        • R2 représente un radical alkyle linéaire ou ramifié, comportant 12 atomes de carbone,
        • T₄, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m4-H dans lequel m4 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T₅ identique ou différent de T₄, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m5-H dans lequel m5 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T₆ identique ou différent de T₄ et de T₅ représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m6-H dans lequel m6 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T₇ identique ou différent de T₄ de T₅ et de T₆, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m7-H dans lequel m7 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix étant entendu que la somme m4 + m5 + m6 + m7 est supérieure à 0 et inférieure ou égale à dix ;
      • β) - Optionnellement jusqu'à 40% molaire composé de formule (III') :
        
        ou de son isomère de formule (IV') :
        
        ou du mélange de ces deux isomères,
        formules (III') et (IV') dans lesquelles :
        • R'₂ représente un radical alkyle linéaire ou ramifié, comportant 14 atomes de carbone,
        • T'₄, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m4-H dans lequel m4 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T'₅ identique ou différent de T'₄, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m5-H dans lequel m5 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T'₆ identique ou différent de T'₄ et de T'₅, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m6-H dans lequel m6 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
        • T'₇ identique ou différent de T'₄, de T'₅ et de T'₆, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m7-H dans lequel m7 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • étant entendu que la somme m4 + m5 + m6 + m7 est supérieure à 0 et inférieure ou égale à dix ; et
      • γ) - Optionnellement jusqu'à 10% molaire d'un composé de formule (III") :
        
        ou de son isomère de formule (IV") :
        
        ou du mélange de ces deux isomères,
        formules (III") et (IV") dans lesquelles :
        • R"₂ représente un radical alkyle linéaire ou ramifié, comportant 16 atomes de carbone,
        • T"₄, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m4-H dans lequel m4 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T"₅ identique ou différent de T"₄, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m5-H dans lequel m5 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • T"₆ identique ou différent de T"₄ et de T"₅ représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m6-H dans lequel m6 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
        • T"₇ identique ou différent de T"₄, de T"₅ et de T"₆, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m7-H dans lequel m7 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
        • étant entendu que la somme m4 + m5 + m6 + m7 est supérieure à 0 et inférieure ou égale à dix ;
      • d) - De 15% massique à 45% massique d'au moins une huile, et
      • e) - De 0% massique à 5% massique d'eau.

According to a first aspect, the subject of the invention is a composition in the form of a self-invertible inverse latex comprising for 100% of its mass:

1. a) - from 50% by weight to 70% by weight of a crosslinked anionic polyelectrolyte (P) obtained by polymerization:
   • Of at least one neutral monomer of formula (I):
     
     wherein the radical R 1 represents a linear or branched aliphatic radical having from 8 to 20 carbon atoms and n represents a number greater than or equal to one and less than or equal to thirty;
   • At least one neutral monomer selected from acrylamide, N, N-dimethylacrylamide, N- [2-hydroxy-1,1-bis (hydroxymethyl) ethyl] propenamide [or tris (hydroxymethyl) acrylamidomethane or N- [tris (hydroxymethyl) methyl] acrylamide also referred to as THAM] or (2-hydroxyethyl acrylate); and
   • At least one monomer comprising a strong acid function and / or at least one monomer comprising a weak acid function;
2. b) - from 4% by weight to 10% by weight of an emulsifier system (S ₁ ) of water-in-oil (W / O) type;
3. c) - from 1 wt% to 10 wt% of an oil-in-water (O / W) emulsifier system (S ₂ ) comprising a non-zero mass proportion of a surfactant composition (C), said surfactant composition (C) ) comprising for 100 mol%:
   1. 1) - a proportion greater than or equal to 10 mol% and less than or equal to 50 mol% of a composition (C _II ) comprising for 100 mol%:
      • α) - from 60 mol% to 100 mol% of a compound of formula (II):
        
        in which :
        • R2 represents a linear or branched alkyl radical containing 12 carbon atoms,
        • T ₁ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 1} -H in which m 1 is an integer greater than or equal to zero and less than or equal to ten,
        • T ₂ identical or different from T ₁ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m2 -H in which m2 is an integer greater than or equal to zero and less than or equal to ten , and
        • T ₃ identical or different from T ₁ and T ₂ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m3 -H in which m3 is an integer greater than or equal to zero and lower or equal to ten,
        • it being understood that the sum m1 + m2 + m3 is greater than 0 and less than or equal to ten; β ) - Optionally up to 40 mol% of a compound of formula (II '):
          
        in which :
        • R ' ₂ represents a linear or branched alkyl radical containing 14 carbon atoms,
        • T ' ₁ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 1} -H in which m 1 is an integer greater than or equal to zero and less than or equal to ten,
        • T ' ₂ identical or different from T' ₁ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m2 -H in which m2 is an integer greater than or equal to zero and less than or equal to to ten, and
        • T ' ₃ identical or different from T' ₁ and T ' ₂ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m3 -H in which m3 is an integer greater than or equal to zero and less than or equal to ten,
        • it being understood that the sum m1 + m2 + m3 is greater than 0 and less than or equal to ten; and γ) - optionally up to 10 mol% of a compound of formula (II "):
          
        in which :
        • R " ₂ represents a linear or branched alkyl radical containing 16 carbon atoms,
        • T " ₁ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 1} -H in which m 1 is an integer greater than or equal to zero and less than or equal to ten,
        • T " ₂ identical or different from T" ₁ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m2 -H in which m2 is an integer greater than or equal to zero and less than or equal to to ten, and
        • T " ₃ identical or different from T" ₁ and T " ₂ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m3 -H in which m3 is an integer greater than or equal to zero and less than or equal to ten,
        • it being understood that the sum m1 + m2 + m3 is greater than 0 and less than or equal to ten;
   2. 2) - a proportion greater than or equal to 50 mol% and less than or equal to 90 mol% of a composition (C _III ) comprising for 100 mol%:
      • α) - from 60 mol% to 100 mol% of a compound of formula (III):
        
        or its isomer of formula (IV):
        
        or a mixture of these two isomers,
        formulas (III) and (IV) in which:
        • R2 represents a linear or branched alkyl radical containing 12 carbon atoms,
        • T ₄ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 4} -H in which m 4 is an integer greater than or equal to zero and less than or equal to ten,
        • T ₅ identical or different from T ₄ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 5} -H in which m 5 is an integer greater than or equal to zero and less than or equal to ten ,
        • T ₆ identical or different from T ₄ and T ₅ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 6} -H in which m 6 is an integer greater than or equal to zero and lower or equal to ten,
        • T ₇ identical or different from T ₄ of T ₅ and T ₆ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m7 -H wherein m7 is an integer greater than or equal to zero and less than or equal to ten, provided that the sum m4 + m5 + m6 + m7 is greater than 0 and less or equal to ten;
      • β) - Optionally up to 40% molar compound of formula (III '):
        
        or its isomer of formula (IV '):
        
        or a mixture of these two isomers,
        formulas (III ') and (IV') in which:
        • R ' ₂ represents a linear or branched alkyl radical containing 14 carbon atoms,
        • T ' ₄ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 4} -H in which m 4 is an integer greater than or equal to zero and less than or equal to ten,
        • T ' ₅ identical or different from T' ₄ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 5} -H in which m 5 is an integer greater than or equal to zero and less than or equal to to ten,
        • T ' ₆ identical or different from T' ₄ and T ' ₅ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 6} -H in which m 6 is an integer greater than or equal to zero and less than or equal to ten, and
        • T ' ₇ identical or different from T' ₄ , T ' ₅ and T' ₆ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m7 -H in which m7 is a number integer greater than or equal to zero and less than or equal to ten,
        • it being understood that the sum m4 + m5 + m6 + m7 is greater than 0 and less than or equal to ten; and
      • γ) - optionally up to 10 mol% of a compound of formula (III "):
        
        or its isomer of formula (IV "):
        
        or a mixture of these two isomers,
        formulas (III ") and (IV") in which:
        • R " ₂ represents a linear or branched alkyl radical containing 16 carbon atoms,
        • T " ₄ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 4} -H in which m 4 is an integer greater than or equal to zero and less than or equal to ten,
        • T " ₅ identical or different from T" ₄ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m5 -H wherein m5 is an integer greater than or equal to zero and less than or equal to to ten,
        • T " ₆ identical or different from T" ₄ and T " ₅ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 6} -H in which m 6 is an integer greater than or equal to zero and less than or equal to ten, and
        • T " ₇ identical or different from T" ₄ , T " ₅ and T" ₆ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m7 -H in which m7 is a number integer greater than or equal to zero and less than or equal to ten,
        • it being understood that the sum m4 + m5 + m6 + m7 is greater than 0 and less than or equal to ten;
      • d) - from 15% by weight to 45% by weight of at least one oil, and
      • e) - From 0% by weight to 5% by weight of water.

By linear or branched, saturated or unsaturated aliphatic radical containing from 6 to 20 carbon atoms, for the radical R 1 in the formula (I) as defined above, is meant more particularly linear radicals such as, for example, radicals, hexyl, octyl, nonyl, decyl, undecyl, dodecyl, tetradecyl, hexadecyl, octadecyl or eicosyl

According to a first particular aspect, in the formula (I) as defined above, the radical R 1 represents a lauryl radical or a stearyl radical.

According to another particular aspect, in the formula (I) as defined above, n is greater than or equal to two and less than or equal to twenty.

According to another particular aspect, in the polyelectrolyte P of the composition which is the subject of the present invention, the strong acid function of the monomers containing it is in particular the sulphonic acid function. Said monomers are, for example, partially or totally salified styrenesulphonic acid or 2-methyl-2 - [(1-oxo-2-propenyl) amino] 1-propanesulphonic acid (also known as 2-acrylamido-2-methyl propanesulfonic acid). or totally salified.

According to another particular aspect, in the polyelectrolyte P included in the composition which is the subject of the present invention, the weak acid function of the monomers comprising them is in particular the partially salified carboxylic acid function. Said monomers are for example acrylic acid, methacrylic acid, itaconic acid, maleic acid or 3-methyl-3 - [(1-oxo-2-propenyl) amino] butanoic acid partially or totally salified. It is more particularly acrylic acid or partially salified methacrylic acid.

For the monomers with strong acid function or low acid function, the term salified indicates that it is alkali metal salts such as sodium or potassium salts, nitrogenous base salts such as, or the salt of ammonium.

The invention more particularly relates to a composition as defined above, for which in the polyelectrolyte (P), the monomeric units comprising a strong acid function are derived from 2-methyl 2 - [(1-oxo 2) -propenyl) amino] 1-propanesulfonic acid partially or totally salified to sodium salt, potassium salt, or ammonium salt and the monomeric units having weak acid function are derived from acrylic acid or methacrylic acid partially salified with sodium salt, potassium salt or ammonium salt.

The invention also more particularly relates to a composition as defined above, for which the polyelectrolyte P comprises, in molar percentage, from 0.5% to 10% of a monomeric unit derived from the monomer of formula (I) such that previously defined.

• 3) - Jusqu'à 5% molaire d'une composition (C_V) comprenant pour 100% molaire
  • α) - De 60% molaire à 100% molaire d'un composé de formule (V) :
    
    dans laquelle :
    • R2 représente un radical alkyle linéaire ou ramifié, comportant de 12 atomes de carbone,
    • T₈, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m8-H dans lequel m8 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
    • T₉ identique ou différent de T₈, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m9-H dans lequel m9 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
    • étant entendu que la somme m8 + m9 est supérieure à 0 et inférieure ou égale à dix ;
  • P) - Optionnellement jusqu'à 40% molaire d'un composé de formule (V')
    
    dans laquelle :
    • R'₂ représente un radical alkyle linéaire ou ramifié, comportant 14 atomes de carbone,
    • T'₈, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m8-H dans lequel m8 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
    • T'₉ identique ou différent de T'₈, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m9-H dans lequel m9 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
    • étant entendu que la somme m8 + m9 est supérieure à 0 et inférieure ou égale à dix ; et
  • γ) - Optionnellement jusqu'à 10% molaire d'un composé de formule
    
    dans laquelle :
    • R"₂ représente un radical alkyle linéaire ou ramifié, comportant 16 atomes de carbone,
    • T"₈, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m8-H dans lequel m8 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix,
    • T"₉ identique ou différent de T"₈, représente un atome d'hydrogène ou un radical (-CH₂-CH₂-O-)_m9-H dans lequel m9 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix, et
    • étant entendu que la somme m8 + m9 est supérieure à 0 et inférieure ou égale à dix.

According to another particular aspect of the present invention, said surfactant composition (C) as defined above, further comprises:

• 3) - Up to 5 mol% of a composition (C _V ) comprising for 100 mol%
  • α) - from 60 mol% to 100 mol% of a compound of formula (V):
    
    in which :
    • R2 represents a linear or branched alkyl radical containing 12 carbon atoms,
    • T ₈ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 8} -H in which m 8 is an integer greater than or equal to zero and less than or equal to ten,
    • T ₉ identical or different from T ₈ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m9 -H wherein m9 is an integer greater than or equal to zero and less than or equal to ten, and
    • it being understood that the sum m8 + m9 is greater than 0 and less than or equal to ten;
  • P) - Optionally up to 40 mol% of a compound of formula (V ')
    
    in which :
    • R ' ₂ represents a linear or branched alkyl radical containing 14 carbon atoms,
    • T ' ₈ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 8} -H in which m 8 is an integer greater than or equal to zero and less than or equal to ten,
    • T ' ₉ identical or different from T' ₈ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _m9 -H in which m9 is an integer greater than or equal to zero and less than or equal to to ten, and
    • it being understood that the sum m8 + m9 is greater than 0 and less than or equal to ten; and
  • γ) - optionally up to 10 mol% of a compound of formula
    
    in which :
    • R " ₂ represents a linear or branched alkyl radical containing 16 carbon atoms,
    • T " ₈ represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 8} -H in which m 8 is an integer greater than or equal to zero and less than or equal to ten,
    • T " ₉ identical or different from T" ₈ , represents a hydrogen atom or a radical (-CH ₂ -CH ₂ -O-) _{m 9} -H in which m 9 is an integer greater than or equal to zero and less than or equal to to ten, and
    • it being understood that the sum m8 + m9 is greater than 0 and less than or equal to ten.

• 4) - Jusqu'à 5% molaire d'une composition (C_VI) comprenant pour 100% molaire :
  • α) - De 60% molaire à 100% molaire d'un composé de formule (VI) :
    
            R2-(-CH₂-CH₂-O-)_m10-H     (VI),
    
    dans laquelle R2 représente un radical alkyle linéaire ou ramifié, comportant 12 atomes de carbone et m10 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix ;
  • P) - Optionnellement jusqu'à 40% molaire d'un composé de formule (VI') :
    
            R'₂-(-CH₂-CH₂-O-)_m10-H     (VI'),
    
    dans laquelle R'₂ représente un radical alkyle linéaire ou ramifié, comportant 14 atomes de carbone et m10 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix ; et
  • γ) - Optionnellement jusqu'à 10% molaire d'un composé de formule (VI") :
    
            R"₂-(-CH₂-CH₂-O-)_m10-H     (VI"),
    
    dans laquelle R"₂ représente un radical alkyle linéaire ou ramifié, comportant 16 atomes de carbone et m10 est un nombre entier supérieur ou égal à zéro et inférieur ou égal à dix.

According to another particular aspect of the present invention, said surfactant composition (C) as defined above, further comprises:

• 4) - Up to 5 mol% of a composition (C _VI ) comprising for 100 mol%:
  • α) - from 60 mol% to 100 mol% of a compound of formula (VI):
    
    R2 - (- CH ₂ -CH ₂ -O-) _m10 -H (VI),
    
    wherein R2 is a linear or branched alkyl radical having 12 carbon atoms and m10 is an integer greater than or equal to zero and less than or equal to ten;
  • P) - Optionally up to 40 mol% of a compound of formula (VI '):
    
    R ' ₂ - (- CH ₂ -CH ₂ -O-) _m10 -H (VI'),
    
    wherein R ' ₂ represents a linear or branched alkyl radical having 14 carbon atoms and m10 is an integer greater than or equal to zero and less than or equal to ten; and
  • γ) - optionally up to 10 mol% of a compound of formula (VI "):
    
    R " ₂ - (- CH ₂ -CH ₂ -O-) _{m 10} -H (VI"),
    
    wherein R " ₂ represents a linear or branched alkyl radical having 16 carbon atoms and m10 is an integer greater than or equal to zero and less than or equal to ten.

1. 1) - Une proportion supérieure ou égale à 20% molaire et inférieure ou égale à 50% molaire d'une composition (C_II) telle que définie précédemment ;
2. 2) - Une proportion supérieure ou égale à 50% molaire et inférieure ou égale à 80% molaire d'une composition (C_II) telle que définie précédemment.

According to one particular aspect of the present invention, said surfactant composition (C) as defined above, comprises:

1. 1) - a proportion greater than or equal to 20 mol% and less than or equal to 50 mol% of a composition (C _II ) as defined above;
2. 2) - A proportion greater than or equal to 50 mol% and less than or equal to 80 mol% of a composition (C _II ) as defined above.

1. 1) - ladite composition (C_II) comprend pour 100% molaire :
   • α) - De 60% à 80% molaire du composé de formule (II),
   • P) - De 15% à 30% molaire du composé de formule (II'), et
   • γ) - Jusqu'à 10% molaire du composé de formule (II"), et
2. 2) - ladite composition (C_III) comprend pour 100% molaire :
   • α) - De 60% à 80% molaire du composé de formule (III), de son isomère de formule (IV) ou du mélange de ces isomères,
   • P) - de 15% à 30% molaire du composé de formule (III'), de son isomère de formule (IV') ou du mélange de ces isomères, et
   • γ) - Jusqu'à 10% molaire du composé de formule (III"), de son isomère de formule (IV") ou du mélange de ces isomères.

According to another particular aspect of the present invention:

1. 1) - said composition (C _II ) comprises for 100 mol%:
   • α) - from 60% to 80% molar of the compound of formula (II),
   • P) - from 15% to 30% molar of the compound of formula (II '), and
   • γ ) - up to 10 mol% of the compound of formula (II "), and
2. 2) - said composition (C _III ) comprises for 100 mol%:
   • α) - from 60% to 80% molar of the compound of formula (III), of its isomer of formula (IV) or of the mixture of these isomers,
   • P) - from 15% to 30% molar of the compound of formula (III '), of its isomer of formula (IV') or of the mixture of these isomers, and
   • γ) - Up to 10 mol% of the compound of formula (III "), its isomer of formula (IV") or the mixture of these isomers.

In the composition as defined above, the emulsifier system (S ₁ ) of water-in-oil (W / O) type consists of either a single surfactant or a mixture of surfactants provided that said surfactant or said mixture has a low enough HLB value to induce water-in-oil emulsions. As an emulsifier of the water-in-oil type, there are, for example, sorbitan esters, such as sorbitan oleate, such as that marketed by the company SEPPIC under the name MONTANE ™ 80, sorbitan isostearate, such as that marketed by the company SEPPIC under the name MONTANE ™ 70 or sorbitan sesquioleate such as that marketed by the company SEPPIC under the name Montane ™ 83. There are also certain polyethoxylated sorbitan esters, for example pentaethoxylated sorbitan mono-oleate such as that marketed by the company SEPPIC under the name MONTANOX ™ 81 or pentaethoxylated sorbitan isostearate such as that sold under the name MONTANOX ™ 71 by the company SEPPIC. There is still oleocetyl alcohol diethoxylated, such as that marketed under the name SIMULSOL ™ OC 72 by the company SEPPIC, polyesters with a molecular weight between 1000 and 3000, products of condensation between a poly (isobutenyl) succinic acid or its anhydride and such as HYPERMER ™ 2296 marketed by the company UNIQEMA or finally block copolymers of molecular weight between 2500 and 3500, such as HYPERMER ™ B246 marketed by the company UNIQEMA or SIMALINE ™ IE 200 marketed by the company SEPPIC.

In the composition that is the subject of the present invention, the oil-in-water (O / W) emulsifier system (S ₂ ) comprises at least a non-zero amount of the surfactant composition (C) as defined above. By non-zero amount, more particularly denotes a proportion greater than or equal to 10% by mass and, more particularly greater than or equal to 50% by mass.

According to one particular embodiment of the present invention, said oil-in-water (O / W) emulsifier system (S ₂ ) consists of 100% by weight of the surfactant composition (C) as defined above.

According to another particular embodiment of the present invention, the emulsifier system (S ₂ ) of oil-in-water (O / W) type further comprises at least one emulsifying surfactant of the (O / W) type different from one or the other. other compounds constituting said surfactant composition (C) as defined above.

• Les esters de sorbitan éthoxylés comme l'oléate de sorbitan polyéthoxylé avec 20 moles d'oxyde d'éthylène commercialisé par la société SEPPIC sous le nom de MONTANOX™ 80 ou le laurate de sorbitan polyéthoxylé avec 20 moles d'oxyde d'éthylène commercialisé par la société SEPPIC sous le nom de MONTANOX™ 20 ;
• L'huile de ricin polyéthoxylée avec 40 moles d'oxyde d'éthylène commercialisé sous le nom SIMULSOL™ OL50 ;
• L'alcool oléodécylique décaéthoxylé, commercialisé par la société SEPPIC sous le nom SIMULSOL™ OC 710 ;
• L'alcool laurique heptaéthoxylé commercialisé sous le nom SIMULSOL™ P7 ;
• Ou les hexaoléates de sorbitan polyéthoxylés commercialisés par la société SEPPIC sous le nom SIMALINE™ IE 400.

"Oil-in-water emulsifier" means emulsifiers having a HLB value high enough to provide oil-in-water emulsions, such as:

• Ethoxylated sorbitan esters such as polyethoxylated sorbitan oleate with 20 moles of ethylene oxide marketed by the company SEPPIC under the name MONTANOX ™ 80 or polyethoxylated sorbitan laurate with 20 moles of ethylene oxide marketed by the company SEPPIC under the name MONTANOX ™ 20;
• Castor oil polyethoxylated with 40 moles of ethylene oxide sold under the name SIMULSOL ™ OL50;
• The oleodecyl alcohol decaethoxylated, sold by the company SEPPIC under the name SIMULSOL ™ OC 710;
• Heptaethoxylated lauryl alcohol marketed under the name SIMULSOL ™ P7;
• Or the polyethoxylated sorbitan hexaoleate marketed by SEPPIC under the name SIMALINE ™ IE 400.

According to one particular embodiment of the composition as defined above, the emulsifier system (S ₂ ) of oil-in-water (O / W) type further comprises a non-zero mass proportion of at least one emulsifying agent of the chosen oil-in-water type. from polyethoxylated sorbitan oleate with 20 moles of ethylene oxide; polyethoxylated sorbitan laurate with 20 moles of ethylene oxide; polyethoxylated castor oil with 40 moles of ethylene oxide; decaethoxylated oleodecyl alcohol, heptaethoxylated lauric alcohol; or polyethoxylated sorbitan hexaoleate.

• de 10% massique à 40% massique d'alcool laurique heptaéthoxylé et
• de 60% massique à 90% massique de ladite composition tensioactive (C).

According to a very particular embodiment of the present invention, said emulsifying system (S ₂ ) of oil-in-water (O / W) type comprises for 100% of its mass:

• from 10% by mass to 40% by weight of lauric alcohol heptaethoxylated and
• from 60% to 90% by weight of said surfactant composition (C).

By connected polyelectrolyte, is meant for (P), a nonlinear polyelectrolyte which has pendant chains so as to obtain, when this polyelectrolyte is dissolved in water, a high state of entanglement leading to low gradient viscosities very important.

For crosslinked polyelectrolyte is meant for (P), a nonlinear polyelectrolyte in the state of three-dimensional network insoluble in water, but swellable with water and thus leading to the production of a chemical gel.

The composition according to the invention may comprise crosslinked polyelectrolytes and / or branched polyelectrolytes.

When the polyelectrolyte (P) is crosslinked, it is more particularly with a diethylenic or polyethylenic compound in a molar proportion expressed relative to the monomers used depending on the chemical nature of the crosslinking agent and generally less than or equal to 0.40 mol% , mainly less than 0.25 mol%, more particularly less than or equal to 0.05 mol% and very particularly between 0.005% and 0.01 mol%. Preferably, the crosslinking agent and / or the branching agent is chosen from ethylene glycol dimethacrylate, diethylene glycol diacrylate and sodium diallyloxyacetate. ethylene glycol diacrylate, diallyl urea, triallylamine, trimethylol propanetriacrylate, methylenebis (acrylamide) or a mixture of these compounds.

The invention more particularly relates to a composition as defined above, for which in the polyelectrolyte (P), the monomeric unit derived from the monomer of formula (I) is a monomeric unit derived from tetraethoxylated lauryl acrylate.

• Les copolymères réticulés de l'acide acrylique partiellement salifié sous forme de sel de sodium ou de sel d'ammonium, de l'acrylamide et de l'acrylate de lauryle tétraéthoxylé ;
• Les copolymères réticulés de l'acide 2-méthyl 2-[(1-oxo 2-propènyl) amino] 1-propanesulfonique partiellement salifié sous forme de sel de sodium ou de sel d'ammonium, de l'acrylamide et de l'acrylate de lauryle tétraéthoxylé ;
• Les copolymères réticulés de l'acide 2-méthyl 2-[(1-oxo 2-propènyl) amino] 1-propanesulfonique partiellement salifié sous forme de sel de sodium ou de sel d'ammonium, de l'acrylate de 2-hydroxy éthyle et de l'acrylate de lauryle tétraéthoxylé ;
• Les copolymères réticulés de l'acrylamide, de l'acide 2-méthyl 2-[(1-oxo 2-propènyl) amino] 1-propanesulfonique, de l'acide acrylique partiellement salifiés sous forme de sel sodium ou de sel d'ammonium et de l'acrylate de lauryle tétraéthoxylé ;
• Les copolymères de l'acide 2-méthyl 2-[(1-oxo 2-propènyl) amino] 1-propanesulfonique partiellement salifié sous forme de sel de sodium ou de sel d'ammonium, de l'acrylamide, du vinyl pyrrolidone et de l'acrylate de lauryle tétraéthoxylé ; et
• Les copolymères réticulés de l'acide 2-méthyl 2-[(1-oxo 2-propènyl) amino] 1-propanesulfonique partiellement ou totalement salifié sous forme de sel de sodium, de l'acide acrylique partiellement salifiés sous forme de sel sodium ou de sel d'ammonium, de l'acrylate de 2-hydroxy éthyle, de tris(hydroxyméthyl)aminométhyl acrylamide et de l'acrylate de lauryle tétraéthoxylé.

The polyelectrolyte (P) is then preferably chosen from:

• Crosslinked copolymers of partially salified acrylic acid in the form of sodium salt or ammonium salt, acrylamide and tetraethoxylated lauryl acrylate;
• Cross-linked copolymers of partially salified 2-methyl 2 - [(1-oxo-2-propenyl) amino] 1-propanesulfonic acid in the form of sodium salt or ammonium salt, acrylamide and acrylate tetraethoxylated lauryl;
• Cross-linked copolymers of partially salified 2-methyl 2 - [(1-oxo-2-propenyl) amino] 1-propanesulfonic acid in the form of sodium salt or ammonium salt, 2-hydroxyethyl acrylate and tetraethoxylated lauryl acrylate;
• Crosslinked copolymers of acrylamide, 2-methyl-2 - [(1-oxo-2-propenyl) amino] 1-propanesulfonic acid, partially salified acrylic acid in the form of sodium salt or ammonium salt and tetraethoxylated lauryl acrylate;
• Copolymers of partially salified 2-methyl-2 - [(1-oxo-2-propenyl) amino] 1-propanesulfonic acid in the form of sodium salt or ammonium salt, acrylamide, vinyl pyrrolidone and tetraethoxylated lauryl acrylate; and
• Crosslinked copolymers of 2-methyl-2 - [(1-oxo-2-propenyl) amino] 1-propanesulfonic acid partially or totally salified in the form of sodium salt, partially salified acrylic acid in sodium salt form or of ammonium salt, 2-hydroxyethyl acrylate, tris (hydroxymethyl) aminomethyl acrylamide and tetraethoxylated lauryl acrylate.

• De 20% molaire à 80% molaire d'unités monomériques issues d'un monomère comportant soit une fonction acide fort, soit une fonction acide faible ;
• De 15% molaire à 75% molaire d'unités monomériques issues d'un monomère neutre différent du composé de formule (I) telle que définie précédemment ;
• De 0,5% à 5% molaire d'unités monomériques issues d'un monomère de formule (I) telle que définie précédemment.

According to another particular aspect of the present invention, the crosslinked anionic polyelectrolyte (P) comprises, for 100% of monomers used:

• From 20 mol% to 80 mol% of monomeric units derived from a monomer comprising either a strong acid function or a weak acid function;
• From 15 mol% to 75 mol% of monomeric units derived from a neutral monomer different from the compound of formula (I) as defined above;
• 0.5% to 5% molar monomeric units derived from a monomer of formula (I) as defined above.

• De 40% molaire à 80% molaire d'unités monomériques issues d'un monomère comportant une fonction acide fort ;
• De 15% molaire à 55% molaire d'unités monomériques issues d'un monomère neutre différent du composé de formule (I) telle que définie précédemment ;
• De 1% à 5% molaire d'unités monomériques issues d'un monomère de formule (I) telle que définie précédemment.

According to another particular aspect of the present invention, the crosslinked anionic polyelectrolyte (P) comprises, for 100% of monomers used:

• From 40 mol% to 80 mol% of monomeric units derived from a monomer comprising a strong acid function;
• From 15 mol% to 55 mol% of monomeric units derived from a neutral monomer different from the compound of formula (I) as defined above;
• 1% to 5% molar monomeric units derived from a monomer of formula (I) as defined above.

In the composition that is the subject of the present invention, the oil phase is constituted either by a commercial mineral oil containing saturated hydrocarbons such as paraffins, isoparaffins or cycloparaffins having, at ambient temperature, a density between 0.7 and 0.9 and a boiling point greater than about 250 ° C, such as for example MARCOL ™ 52 or MARCOL ™ 82, marketed by EXXON CHEMICAL, or by a vegetable oil such as squalane of vegetable origin, or by a synthetic oil such as hydrogenated polyisobutene or hydrogenated polydecene, or a mixture of several of these oils. MARCOL ™ 52 is a commercial oil that meets the definition of vaseline oils from the French Codex. It is a white mineral oil in accordance with FDA 21 CFR 172.878 and CFR 178.3620 (a) and is listed in the US Pharmacopeia, US XXIII (1995) and the European Pharmacopoeia (1993). The composition according to the invention may also contain various additives such as complexing agents, transfer agents or chain-limiting agents.

1. a) l'on émulsionne une phase aqueuse (A) contenant les monomères et les éventuels additifs hydrophiles, dans une phase organique (O) contenant, le système tensioactif (S₁), un mélange constitué de l'huile destinée à être présente dans la composition finale et d'une huile volatile et les éventuels additifs hydrophobes,
2. b) l'on amorce la réaction de polymérisation par introduction dans l'émulsion formée en a), d'un initiateur de radicaux libres puis on la laisse se dérouler, et
3. c) l'on concentre par distillation le milieu réactionnel issu de l'étape b), jusqu'à élimination complète de ladite huile volatile ;
4. d) l'on introduit dans le milieu concentré issu de l'étape c), ledit système émulsionnant (S₂) de type huile dans eau (H/E) à une température inférieure ou égale à 70°C.

According to another aspect of the present invention, the subject of the present invention is a process for preparing the composition as defined above, characterized in that:

1. a) an aqueous phase (A) containing the monomers and any hydrophilic additives is emulsified in an organic phase (O) containing, the surfactant system (S ₁ ), a mixture consisting of the oil intended to be present in the final composition and a volatile oil and any hydrophobic additives,
2. b) initiating the polymerization reaction by introducing into the emulsion formed in a), a free radical initiator and then allowing it to proceed, and
3. c) the reaction medium resulting from step b) is concentrated by distillation until complete elimination of said volatile oil;
4. d) is introduced into the concentrated medium from step c), said emulsifier system (S ₂ ) oil-in-water (O / W) at a temperature of less than or equal to 70 ° C.

The volatile oils suitable for carrying out the process as defined above are, for example, light isoparaffins comprising from 8 to 13 carbon atoms, for example those sold under the names ISOPAR ™ G, ISOPAR ™ L or ISOPAR ™. H or ISOPAR ™ J.

According to a preferred embodiment of the process as defined above, the polymerization reaction is initiated by a redox pair, such as cumene hydroperoxide-sodium metabisulphite pair, at a temperature of less than or equal to 10 ° C., and then conducted either in a quasi-adiabatic manner up to a temperature greater than or equal to 40 ° C, more particularly greater than or equal to 50 ° C, or by controlling the evolution of the temperature.

• Une étape a) de réaction d'un mélange d'alcools comprenant pour 100% molaire :
  • De 60% molaire à 100% molaire d'un composé de formule (VII),
    
            R2-O-H     (VII),
    
    dans laquelle R2 représente un radical alkyle linéaire ou ramifié, comportant 12 atomes de carbone ;
  • Optionnellement jusqu'à 40% molaire d'un composé de formule (VII') :
    
            R'₂-O-H     (VII'),
    
    dans laquelle R'₂ représente un radical alkyle linéaire ou ramifié, comportant 14 atomes de carbone, et
  • Optionnellement jusqu'à 10% molaire d'un composé de formule (VII") :
    
            R"₂-O-H     (VII"),
    
    dans laquelle R"₂ représente un radical alkyle linéaire ou ramifié, comportant 16 atomes de carbone;

avec un excès de 3-(hydroxyméthyl) 3-éthyl oxétane de formule (VIII) :

pour former une composition (C') comprenant :

• α) - Le composé de formule (IX) :
  
  dans laquelle R2 est tel que défini ci-dessus ;
• β) - Optionnellement le composé de formule (IX)' :
  
  dans laquelle R'₂ est tel que défini ci-dessus ;
• γ) - Optionnellement le composé de formule (IX") :
  
  dans laquelle R"₂ est tel que défini ci-dessus ;
• δ) - Le composé de formule (X) :
  
  ou son isomère de formule (XI) :
  
  ou un mélange de ces deux isomères ; composés de formules (X) et (XI) dans lesquelles R2 est tel que défini ci-dessus ;
• ε) - Optionnellement le composé de formule (X') :
  
  ou son isomère de formule (XI') :
  
  ou un mélange de ces deux isomères ; composés de formules (X') et (XI') dans lesquelles R'₂ est tel que défini ci-dessus ;
• ζ) - Optionnellement le composé de formule (X") :
  
  ou son isomère de formule (XI") :
  
  ou un mélange de ces deux isomères ; composés de formules (X") et (XI") dans lesquelles R"₂ est tel que défini ci-dessus ;

The process for preparing said surfactant composition (C) as defined above comprises the following successive steps:

• A reaction step a) of a mixture of alcohols comprising for 100 mol%:
  • From 60 mol% to 100 mol% of a compound of formula (VII),
    
    R2-OH (VII),
    
    wherein R2 represents a linear or branched alkyl radical having 12 carbon atoms;
  • Optionally up to 40 mol% of a compound of formula (VII '):
    
    R ' ₂ -OH (VII'),
    
    in which R ' ₂ represents a linear or branched alkyl radical containing 14 carbon atoms, and
  • Optionally up to 10 mol% of a compound of formula (VII "):
    
    R " ₂ -OH (VII"),
    
    wherein R " ₂ represents a linear or branched alkyl radical having 16 carbon atoms;

with an excess of 3- (hydroxymethyl) 3-ethyl oxetane of formula (VIII):

to form a composition (C ') comprising:

• α) - The compound of formula (IX):
  
  wherein R2 is as defined above;
• β) - Optionally the compound of formula (IX) ':
  
  wherein R ' ₂ is as defined above;
• γ) - Optionally the compound of formula (IX "):
  
  wherein R " ₂ is as defined above;
• δ) - The compound of formula (X):
  
  or its isomer of formula (XI):
  
  or a mixture of these two isomers; compounds of formulas (X) and (XI) wherein R2 is as defined above;
• ε) - Optionally the compound of formula (X '):
  
  or its isomer of formula (XI '):
  
  or a mixture of these two isomers; compounds of formulas (X ') and (XI') wherein R ' ₂ is as defined above;
• ζ) - Optionally the compound of formula (X "):
  
  or its isomer of formula (XI "):
  
  or a mixture of these two isomers; compounds of formulas (X ") and (XI") wherein R " ₂ is as defined above;

pour former ladite composition tensioactive (C) telle que définie précédemment. A step b) of reacting said composition (C ') with the ethylene oxide of formula (XII):

to form said surfactant composition (C) as defined above.

The subject of the invention is also the use of the composition as defined above, as thickener and / or emulsifier, for preparing a topical cosmetic, dermopharmaceutical or pharmaceutical composition.

The invention also relates to a topical cosmetic, dermopharmaceutical or pharmaceutical composition, characterized in that it comprises, as thickening and / or emulsifying agent, an effective amount of the composition as defined above.

A topical composition according to the invention, intended to be applied to the skin, the scalp or the mucous membranes of humans or animals, may consist of a topical emulsion comprising at least one aqueous phase and at least one phase oil, in the form of a water-in-oil emulsion, or oil in water, or water in oil in water, or oil in water in oil. More particularly, this topical emulsion may consist of a fluid emulsion, such as a milk or a fluid gel. The oil phase of the topical emulsion can consist of a mixture of one or more oils.

A topical composition according to the invention may be intended for cosmetic use or be used to prepare a medicament for the treatment of diseases of the skin, scalp and mucous membranes. In the latter case, the topical composition then comprises an active ingredient which may for example consist of an anti-inflammatory agent, a muscle relaxant, an antifungal agent or an antibacterial agent.

When the topical composition is used as a cosmetic composition intended to be applied to the skin, the scalp or the mucous membranes, it may or may not comprise an active ingredient, for example a moisturizing agent, a tanning agent, a sunscreen, an anti-wrinkle, a slimming agent, an antiradical agent, an anti-dandruff agent, an anti-acne agent or an antifungal agent.

By effective amount, it is meant that the topical composition according to the invention comprises a sufficient amount of inverse latex according to the invention to cause a change in its rheology. The topical composition according to the invention usually comprises between 0.1% and 10% by weight of said self-invertible inverse latex defined above. The pH of the topical composition is generally between 3 and 9.

The topical composition may further comprise compounds conventionally included in this type of composition, for example perfumes, preservatives, dyes, emollients or surfactants.

According to yet another aspect, the invention relates to the use of the novel thickening and / or emulsifying agent according to the invention, mentioned above, for thickening and emulsifying a topical composition comprising at least one aqueous phase.

The composition according to the invention is an interesting substitute to those sold under the names SEPIGEL ™ 305, SEPIGEL ™ 501, SIMULGEL ™ EG, SIMULGEL ™ NS or SIMUL-GEL ™ 600 by the applicant, since it also has good compatibility with the other excipients used for the preparation of formulations such as milks, lotions, creams, soaps, baths, balms, shampoos or conditioners. It can also be implemented with said SEPIGEL or SIMULGEL. It is especially compatible with the concentrates described and claimed in international publications WO 92/06778 , WO 95/04592 , WO 95/13863 , WO 96/37285 , WO 98/22207 , WO 98/47610 or in FR 2734496 with the surfactants described in WO 93/08204 . It is particularly compatible with MONTANOV ™ 68, MONTANOV ™ 82, MONTANOV ™ 202, MONTANOV ™ L, MONTANOV ™ 14 or MONTANOV ™ S. It can also be used in emulsions of the type described and claimed in EP 0 629 396 and in cosmetically or physiologically acceptable aqueous dispersions with a selected organopolysiloxane compound, for example from those described in US Pat. WO 93/05762 or in WO 93/21316 . It can also be used to form aqueous gels with cosmetically or physiologically acceptable acidic pH, such as those described in US Pat. WO 93/07856 ; it can also be used in combination with nonionic celluloses, for example to form styling gels such as those described in US Pat. EP 0 684 024 , or in association with esters of fatty acids and sugar, to form compositions for the treatment of hair or skin such as those described in EP 0 603 019 or in shampoos or conditioners as described and claimed in WO 92/21316 or finally in combination with an anionic homopolymer such as CARBOPOL ™ to form hair treatment products such as those described in DE 195 23596 or in combination with other thickening polymers.

The composition according to the invention is also compatible with the active principles such as, for example, self-tanning agents such as dihydroxyacetone (DHA) or anti-acne agents; it can therefore be introduced into self-tanning compositions such as those claimed in EP0 715 845 , EP 0 604 249 , EP 0 576 188 or in 93/07902 .

It is also compatible with N-acylated derivatives of amino acids, which allows its use in soothing compositions, especially for sensitive skin, such as those described or claimed in WO 92/21318 , WO 94/27561 or in WO 98/09611 and which also allows its use in lightening compositions of human skin such as those described or claimed in WO2003 / 061768 .

When the composition as defined above is intended for the treatment of the skin and / or the scalp and / or the mucous membranes, it more particularly comprises an inverse anionic polyelectrolyte latex object of the present invention. The inverse latexes of the present invention can be used as a thickener for textile printing pastes.

The following examples are intended to illustrate the present invention without limiting it.

EXAMPLE A) Preparation of a Surfactant Composition (C) Used in the Composition Subject of the Present Invention Stage A1): Preparation of the Intermediate Composition (C ')

• Aspect à 25°C : Gel trouble
• Indice d'acide (en mg KOH/g ; NFT60-204) : 3,9
• Indice d'hydroxyle (en mg KOH/g) : 400,5
• Teneur massique en 3-(hydroxyméthyl) 3-éthyl oxétane libre (déterminée par chromatographie en phase gazeuse) : < 0.05%
• Teneur massique en alcanols libres (déterminée par chromatographie en phase gazeuse) : alcanol en C12 : 5,7% ; alcanol en C14 : 2,0% ; alcanol en C16 : 0,5%.

21,100 g of a mixture of fatty alcohols comprising from 65% to 75% by weight of alkanol containing 12 carbon atoms, from 21% to 28% by weight of alkanol containing 14 carbon atoms and from 4% to 8% by mass. preheated alkanol with 16 carbon atoms are introduced into a reactor, stirred and dried, 326 grams of 50% boron trifluoride are then added to the diethyl ether and then gradually stirred for 4 hours, 32,600 3- (hydroxymethyl) 3-ethyloxetane, keeping the temperature around 110 ° C. The reaction medium is then left for another 11 hours at 115 ° C. The expected composition (C ') is then obtained, characterized as follows:

• Appearance at 25 ° C: cloudy gel
• Acid number (in mg KOH / g, NFT60-204): 3.9
• Hydroxyl value (in mg KOH / g): 400.5
• Mass content of free 3- (hydroxymethyl) 3-ethyloxetane (determined by gas chromatography): <0.05%
• Mass content of free alkanols (determined by gas chromatography): C12 alkanol: 5.7%; C14 alkanol: 2.0%; C16 alkanol: 0.5%.

Stage A2): Preparation of the surfactant composition (C)

• Aspect à 30°C : liquide limpide
• Couleur : 125 Alpha
• Indice d'hydroxyle (en mg KOH/g) : 252,5
• Indice d'acide (en mg KOH/g) (NFT60-204) : 0,08
• Teneur résiduelle en eau : 0.05%
• Point de trouble (NF EN 1890E) : 76°C
• Teneur massique en alcanols libres (chromatographie en phase gazeuse) : Alcanol en C12 : 1,2% ; alcanol en C14 : 0,4% ; alcanol en C16 : 0,1% soit au total 1.7% d'alcanols résiduels
• Viscosité à 25°C (Brookfield LVT Mobile 3 Vitesse 12) : 1.072 mPa.s

50,000 g of the intermediate composition (C ') obtained in Stage A1) above are introduced into an autoclave with a capacity of 0.1 m ³ , with 75 g of potassium hydroxide and then dried at a temperature of 105 ° C. An amount of 35,000 grams of ethylene oxide is then gradually introduced by controlling the temperature of the reaction mixture to 125 ° C. After the total amount of ethylene oxide has been introduced, the reaction mixture is stirred at 125 ° C for an additional one hour. The product then obtained is then cooled to a temperature of 80 ° C and drained. We then obtain the surfactant composition (C) characterized as follows:

• Appearance at 30 ° C: clear liquid
• Color: 125 Alpha
• Hydroxyl value (in mg KOH / g): 252.5
• Acid number (in mg KOH / g) (NFT60-204): 0.08
• Residual water content: 0.05%
• Cloud point (NF EN 1890E): 76 ° C
• Mass content of free alkanols (gas chromatography): C12 Alcanol: 1.2%; C14 alkanol: 0.4%; C16 alkanol: 0.1%, ie a total of 1.7% of residual alkanols
• Viscosity at 25 ° C (Brookfield LVT Mobile 3 Speed 12): 1.072 mPa.s

EXAMPLE 1 (according to the invention): Self-invertible inverse latex of the copolymer ATBS (Na salt) / HEA / (ALE-4 EO) [(ATBS / HEA / (ALE-4OE) 89.0 / 9.9 / 1.1 molar] cross-linked to MBA 1) Preparation

1. a) - In a first beaker, successively introduced with stirring:
   • 672.5 g of a commercial solution containing 55% by weight of sodium salt of 2-acrylamido-2-methylpropanesulphonic acid (ATBS Na),
   • 20.8g of 2-hydroxyethyl acrylate (HEA);
   • 0.028g of methylene bis (acrylamide) (MBA), and
   • 1.0 g of a 40% by weight commercial solution of diethylenetriaminepenta sodium acetate.
     Then the pH is adjusted to 4, adding if necessary the required amount of 2-acrylamido-2-methylpropanesulphonic acid and permutated water up to 700 g
2. b) - In a second beaker, successively introduced with stirring:
   • 130 g of polyisobutene,
   • 30 g of MARCOL ™ 52,
   • 90 g of ISOPAR ™ H,
   • 17 g MONTANE ™ 70,
   • 3 g of HYPERMER ™ 6212,
   • 5 g of SIMALINE ™ IE 200,
   • 7.2 g of tetraethoxylated lauryl acrylate (commercial) (ALE-4OE),
   • 0.36 g of dilauroyl peroxide.
3. c) - The aqueous phase is then incorporated into the organic phase with stirring and then the pre-emulsion thus obtained is subjected to a shearing mechanical stirring using a Silverson type turbine so as to create a fine emulsion under bubbling nitrogen.
4. d) - After cooling to about 8 ° C, the polymerization reaction is initiated using the oxidation-reduction pair: cumene hydroperoxide / sodium metabisulfite.
5. e) - Once the polymerization reaction is complete, the ISOPAR ™ H and almost all of the water are distilled off under vacuum.
6. f) - is obtained after introduction of 2% by weight of Laureth-7 and 4% by weight of the surfactant composition (C) obtained in Example A, the self-invertible inverse latex (1) containing about 63% of polymer, which is not very viscous, which is reversed very quickly in water and whose thickening power is important. Moreover, this inverse latex is very stable because no phenomenon of syneresis is observed, in that it releases only very little oil and that polymer does not sediment. Its water content measured by Karl-Fisher titrimetry is 1.8% by weight.

2) Viscosity measurements

a) - The viscosity of the self-invertible inverse latex (1) obtained as indicated in paragraph 1 is measured, that of an aqueous solution free of sodium chloride (Sol.1) and those of aqueous solutions containing respectively 0.1% mass (Sol.2) and 1% by weight (Sol.3) of sodium chloride, said aqueous solutions each comprising 2% by weight of said self-invertible inverse latex (1). The results measured using a Brookfield RVT viscometer are recorded in the following table: Mobile (M); Rotation speed of the mobile (V) (in revolutions per minute) Viscosity (in mPa.s) Reverse latex (1) M3, V20 2,700 Sol.1 M6, V5 54,000 Ground. 2 M6, V5 27,000 Sol.3 M3, V5 1,600

3) Measurement of the inversion time and evaluation of the stability of the inverse latex.

1. a) - The inversion time is evaluated by measuring the time required to obtain a smooth and homogeneous gel for a 2% by weight aqueous solution of self-invertible inverse latex (1) under the standard conditions for measuring this viscosity. that is to say by incorporating 16 g of the inverse latex (1) into 784 g of water, all of which is placed in a 1-liter beaker of low form, then stirring the whole with the aid of a typical propeller butterfly turning 150 turns per minute. The inversion time is thus the evaluated time between the start of the stirrer and the appearance of a smooth and homogeneous medium in the beaker. In this example, the inversion time is 50 seconds.
2. b) - The stability of the inverse latex is evaluated by observing the time of appearance of an oil layer on the surface. In the present example, the time of appearance of the oil layer on the surface of the inverse latex (1) is two weeks.

EXAMPLE T1 (according to the state of the art) : Self-invertible inverse latex of the copolymer ATBS (Na salt) / HEA / (ALE-4OE) [(ATBS / HEA / (ALE-4OE) 89.0 / 9, 9 / 1.1 molar] crosslinked to MBA 1) Preparation

The steps a) to d) of Example 1 are repeated. In step f), 4% by weight of MONTANOX ™ 20 is added in place of 4% by weight of the surfactant composition (C) and the self-invertible inverse latex (T1).

2) Viscosity measurements

a) - The viscosity of the self-invertible inverse latex (T1) obtained as indicated in paragraph 1 is measured, that of an aqueous solution free of sodium chloride (Sol.4) and those of aqueous solutions containing respectively 0.1% mass (Sol.5) and 1% by weight (Sol.6) of sodium chloride, said aqueous solutions each comprising 2% by weight of said self-invertible inverse latex (T1). The results measured using a Brookfield RVT viscometer are recorded in the following table: Mobile (M); Rotation speed of the mobile (V) (in revolutions per minute) Viscosity (in mPa.s) Reverse latex (T1) M3, V20 2,900 Sol.4 M6, V5 51.200 Ground. 5 M6, V5 25,200 Sol.6 M3, V5 1,300

3) Measurement of the inversion time and evaluation of the stability of the inverse latex.

1. a) - The inversion time evaluated in the same way as in the previous example is 2 minutes 20 seconds.
2. b) - The stability of the inverse latex (T1) is evaluated in the same way as in the previous example. A significant release of oil is observed after one week.

EXAMPLE 2 (according to the invention) : Self-invertible inverse latex of the copolymer ATBS (Na salt) / HEA / (ALE-4OE) [(ATBS / HEA / (ALE-4OE) 89.0 / 9.9 / 1.1 molar] cross-linked to MBA 1) Preparation

The steps a) to d) of Example 1 are repeated. In step f), only 4% by weight of the surfactant composition (C) is added and the self-invertible inverse latex (2) is obtained. ).

2) Viscosimetry, inversion time measurement and evaluation of the stability of the inverse latex (2)

1. a) - The viscometric performances of the inverse latex (2) are similar to those reported for the inverse latex of Example 1.
2. b) - The reversal time of the inverse latex (2), evaluated in the same manner as in Example 1, is about 40 seconds.
3. c) - The stability of the inverse latex (2) is evaluated in the same manner as in Example 1. The time of appearance of the oil layer is a few days.

EXAMPLE T2 (according to the state of the art) : Self-Invertible Reverse Latex of the Copolymer ATBS (Na Salt) / HEA / (ALE-4OE) [(ATBS / HEA / (ALE4OE) 89.0 / 9.9 / 1.1 molar] crosslinked to MBA 1) Preparation

1. i) - Une proportion supérieure ou égale à 10% molaire et inférieure ou égale à 50% molaire d'un composé de formule (II"') correspondant à la formule (II) dans laquelle R2 représente un radical alkyle linéaire ou ramifié, comportant 10 atomes de carbone, et dans la quelle la somme m1 + m2 + m3 est égale à 5;
2. ii) - Une proportion supérieure ou égale à 50% molaire et inférieure ou égale à 90% molaire d'un composé de formule (III"') ou de son isomère de formule (IV"') ou du mélange de ces deux isomères, formules (III"') et (IV"') correspondant respectivement aux formules (III) et (IV) dans lesquelles R2 représente un radical alkyle linéaire ou ramifié, comportant 10 atomes de carbone, et dans la quelle la somme m4 + m5 + m6 + m7 est égale à 5; et l'on obtient le latex inverse auto-inversible (T2).

The steps a) to d) of Example 1 are repeated. In step f), 4% by weight of a composition (C "') is added, which comprises, for 100 mol%:

1. i) - A proportion greater than or equal to 10 mol% and less than or equal to 50 mol% of a compound of formula (II "') corresponding to formula (II) in which R2 represents a linear or branched alkyl radical, comprising 10 carbon atoms, and in which the sum m1 + m2 + m3 is equal to 5;
2. ii) a proportion greater than or equal to 50 mol% and less than or equal to 90 mol% of a compound of formula (III "') or of its isomer of formula (IV"') or of the mixture of these two isomers, formulas (III "') and (IV"') respectively corresponding to formulas (III) and (IV) in which R2 represents a linear or branched alkyl radical containing 10 carbon atoms, and in which the sum m4 + m5 + m6 + m7 is equal to 5; and the self-invertible inverse latex (T2) is obtained.

2) Viscosimetry, measure of inversion time and evaluation of the stability of the inverse latex (T2)

1. a) - The viscometric performances of the inverse latex (T2) are similar to those reported for the inverse latex of Example 1.
2. b) - The reversal time of the inverse latex (T2), evaluated in the same manner as in Example 1, is about 50 seconds.
3. c) - The stability of the inverse latex (T2) is evaluated in the same way as in Example 1. The time of appearance of the oil layer is a few hours.

EXAMPLE T3 (according to the state of the art) : Self-invertible inverse latex of the copolymer AM / AA / (ALE-4OE) [(AM / AA / (ALE-4OE) 24.7 / 74.1 / 1.2 molar] crosslinked to the MBA 1) Preparation

1. a) - In a first beaker, successively introduced with stirring:
   • 106.5 g of a commercial solution of acrylamide (AM) at 50% (by mass)
   • 162.0 g of glacial acrylic acid (AA),
   • 98.1 g of a solution of ammonia at 29.3% by weight,
   • 0.047 g methylene bis (acrylamide) (MBA).
   • 0.45 g of a 40% commercial solution of sodium diethylenetriaminepentaacetate,
   • permuted water up to 680 g.
2. b) - In a second beaker, successively introduced with stirring:
   • 121 g of polyisobutene,
   • 28 g of MARCOL ™ 52,
   • 99 g of ISOPAR ™ H,
   • 17 g MONTANE ™ 70,
   • 3 g of HYPERMER ™ 2296,
   • 5 g of SIMALINE ™ IE 200,
   • 1.2 g of tetraethoxylated lauryl acrylate (commercial) (ALE-4OE),
   • 0.1 g of AIBN.
3. c) - The aqueous phase is then incorporated into the organic phase with stirring and then the pre-emulsion thus obtained is subjected to a shearing mechanical stirring using a Silverson type turbine so as to create a fine emulsion under bubbling nitrogen.
4. d) - After cooling to about 8 ° C, the polymerization reaction is initiated using the oxidation-reduction pair: cumene hydroperoxide / sodium metabisulfite.
5. e) - Once the polymerization reaction is complete, the ISOPAR ™ H and almost all of the water are distilled off under vacuum.
6. f) - After the introduction of 4% of MONTANOX ™ 20 and 2% of Laureth 7, the self-invertible inverse latex (T3), containing about 63% of polymer, which is not very viscous, which is reversed very rapidly, is obtained in water and whose thickening power is important. Its water content measured by Karl-Fisher titrimetry is 1.8% by weight.

2) Viscosity measurements

a) - The viscosity of the self-invertible inverse latex (T3) obtained as indicated in paragraph 1 is measured, that of an aqueous solution free of sodium chloride (Sol.7) and those of aqueous solutions respectively containing 0.1% mass (Sol.8) and 1% by mass (Sol.9) of sodium chloride, said aqueous solutions each comprising 2% by weight of said self-invertible inverse latex (T3). The results measured using a Brookfield RVT viscometer are recorded in the following table: Mobile (M); Rotation speed of the mobile (V) (in revolutions per minute) Viscosity (in mPa.s) Reverse latex (T3) nd Sol.7 M6, V5 79,400 Ground. 8 M6, V5 45,200 Sol.9 M3, V5 3,300 nd: not determined

3) Measurement of the inversion time and evaluation of the stability of the inverse latex (T3).

• b) - The reversal time of the inverse latex (T3), evaluated in the same manner as in Example 1, is about 2 minutes.
• c) - The stability of the inverse latex of the inverse latex (T3) is evaluated in the same manner as in Example 1. The time of appearance of the oil layer is two weeks.

EXAMPLE 3 (According to the Invention): Self-Invertible Reverse Latex of the Copolymer AM / AA / (ALE-4OE) [(AM / AA / (Alfa-4OE) 24.7 / 74.1 / 1.2 molar] Cross-linked to MBA 1) Preparation

Steps a) to d) of Example T3 are repeated. In step f), 2% by weight of Laureth 7 and 4% by weight of the surfactant composition (C) are added instead of 4% of MONTA-NOX ™ 20 and 2% of Laureth 7 of said example T3 and the self-invertible inverse latex (3) is obtained.

2) Viscosimetry, inversion time measurement and stability evaluation of the latex in pays (3)

1. a) - The viscometric performances of the inverse latex (3) are similar to those reported for the inverse latex of Example T3.
2. b) - The reversal time of the inverse latex (3), evaluated in the same manner as in Example 1, is about 30 seconds.
3. c) - The stability of the inverse latex (3) is evaluated in the same manner as in Example 1. The time of appearance of the first drops of oil is three weeks.

EXAMPLE 4 (according to the invention) : Self-invertible inverse latex of the copolymer ATBS (Na salt) / AA / HEA / THAM / (ALE-4OE) [ATBS / AA / HEA / THAM (ALE-4OE) 83.9 / 1.9 / 9.3 / 3.7 / 1.2 molar] cross-linked to the MBA 1) Preparation

1. a) - In a first beaker, successively introduced with stirring:
   • 672.5 g of a commercial solution containing 55% (by weight) of the sodium salt of 2-acrylamido-2-methylpropanesulphonic acid (ATBSNa);
   • 20.8 g of 2-hydroxyethyl acrylate;
   • 12.6 g THAM;
   • 2.6 g of acrylic acid (AA)
   • 0.041 g methylene bis (acrylamide) (MBA).
   • 0.45 g of a 40% commercial solution of sodium diethylenetriaminepentacetate,
   
   Then the pH is adjusted to 4 by adding, if necessary, the required amount of 2-acrylamido-2-methyl propane sulfonic acid and the permutated water up to 700 g.
2. b) - In a second beaker, successively introduced with stirring:
   • 130 g of polyisobutene,
   • 30 g of MARCOL ™ 52,
   • 90 g of ISOPAR ™ H,
   • 17 g MONTANE ™ 70,
   • 5 g of HYPERMER ™ 6212,
   • 3 g of DEHYMULS PGPH (polyglycerol polyhydroxy stearate),
   • 7.4 g of tetraethoxylated lauryl acrylate (commercial) (ALE-4OE),
   • 0.14g of dilauroyl peroxide
3. c) - The aqueous phase is then introduced into the organic phase with stirring and then the pre-emulsion thus obtained is subjected to a shearing mechanical stirring using a Silverson type turbine so as to create a fine emulsion under bubbling nitrogen.
4. d) - After cooling to about 8 ° C, the polymerization reaction is initiated using the oxidation-reduction pair: cumene hydroperoxide / sodium metabisulfite.
5. e) - Once the polymerization reaction is complete, the ISOPAR ™ H and almost all of the water are distilled off under vacuum.
6. f) - is obtained after introduction of 2% by weight of Laureth-7 and 4% by weight of the surfactant composition (C) obtained in Example A, the self-invertible inverse latex (4), containing about 63% of polymer , which is not very viscous, which reverses very quickly in water and whose thickening power is important. Its water content measured by Karl-Fisher titrimetry is 2.2% by weight.

2) Viscosity measurements

a) - The viscosity of the self-invertible inverse latex (4) obtained as indicated in paragraph 1 is measured, that of an aqueous solution free of sodium chloride (sol.10) and that of an aqueous solution containing 0.1 % mass (Sol.11) of sodium chloride, said aqueous solutions each comprising 2% by weight of said self-invertible inverse latex (4). The results measured using a Brookfield RVT viscometer are recorded in the following table: Mobile (M); Rotation speed of the mobile (V) (in revolutions per minute) Viscosity (in mPas) Reverse latex (4) M3, V20 1,100 Sol.10 M6, V5 66.200 Sol.11 M6, V5 16,500 nd: not determined

3) Measurement of inversion time and evaluating the stability of the inverse latex.

• b) - The reversal time of the inverse latex (4), evaluated in the same manner as in Example 1, is about 30 seconds.
• c) - The stability of the inverse latex (4) is evaluated in the same manner as in Example 1. The time of appearance of the first drops of oil is three weeks.

Examples of cosmetic formulations (proportions expressed in percentages by mass) Example 5 Care Cream

Cyclomethicone: 10% Self-reversing inverse latex (1): 0.8% MONTANOV ™ 68: 4.5% Conservative: 0.65% Lysine: 0.025% EDTA (disodium salt): 0.05% Xanthan gum: 0.2% Glycerin: 3% Water: qsp 100%

Example 6: Care cream

Cyclomethicone: 10% Self-invertible inverse latex (3): 0.8% MONTANOV ™ 68: 4.5% Perfluoropolymethylisopropyl ether: 0.5% Conservative: 0.65% Lysine: 0.025% EDTA (disodium salt): PEMULEN ™ TR: 0.05% Glycerin: 3% Water: qsq 100%

Example 7 Aftershave Balm

FORMULA AT Self-invertible inverse latex (2): 1.5% Water: qs. 100% B MICROPEARL ™ M100: 5.0% SEPICIDE ™ CI: 0.50% Perfume: 0.20% Ethanol at 95 °: 10.0%

OPERATIVE MODE

Add B to A.

EXAMPLE 8 Satin Emulsion for the Body

FORMULA AT SIMULSOL ™ 165: 5.0% LANOL ™ 1688: 8.50% Shea Butter : 2% Paraffin oil : 6.5% LANOL ™ 14 M: 3% LANOL ™ S: 0.6% B Water: 66.2% VS MICROPEARL ™ M 100: 5% D Self-invertible inverse latex (4): 3% E SEPICIDE ™ Cl 0.3% SEPICIDE ™ HB: 0.5% MONTEINE ™ CA: 1% Perfume: 0.20% Vitamin E acetate: 0.20% pyrolidinonecarboxylate sodium (moisturizing agent): 1%

OPERATIVE MODE

Add C to B, emulsify B in A at 70 ° C, then add D at 60 ° C and then E at 30 ° C.

Example 9: Body Milk

FORMULA AT SIMULSOL ™ 165: 5.0% LANOL ™ 1688: 12.0% LANOL ™ 14 M: 2.0% Cetyl alcohol: 0.3% SCHERCEMOL ™ OP: 3% Handsome: q.s. 100% VS Self-invertible inverse latex (3): 0.35% D SEPICIDE ™ CI: 0.2% SEPICIDE ™ HB: 0.5% Perfume: 0.20%

OPERATIVE MODE

Emulsify B in A at 70 ° C, add C, then add D at 60 ° C and then E at 30 ° C.

Example 10: O / W Cream

FORMULA AT SIMULSOL ™ 165: 5.0% LANOL ™ 1688: 20.0% LANOL ™ P: 1.0% B Water: q.s. 100% VS Self-invertible inverse latex (2): 2.50% D SEPICIDE ™ CI: 0.20% SEPICIDETM HB: 0.30%

OPERATIVE MODE

Introduce B in A to 75 ° C; add C to 60 ° C, then D to 45 ° C

Example 11: Non-fat solar gel

FORMULA AT Self-reversing inverse latex (1): 3.00% Water: 30% B SEPICIDE ™ C: 0.20% SEPICIDE ™ HB: 0.30% Perfume: 0.10% VS Coloring: qs Water: 30% D MICROPEARL ™ M 100: 3.00% Water: q.s. 100% E Silicone oil: 2.0% PARSOL ™ MCX: 5.00%

OPERATIVE MODE

Introduce B into A; add C then D, then E.

Example 12: Solar milk

FORMULA AT SEPIPERL ™ N: 3.0% Sesame oil : 5.0% PARSOL ™ MCX: 5.0% Carrageenan: 0.10% B Water: q.s.p.100% VS Self-invertible inverse latex (3): 0.80% D Perfume: qs Conservative: qs

OPERATIVE MODE

Emulsify B in A at 75 ° C then add C to 60 ° C, then D to 30 ° C and adjust the pH if necessary

Example 13: Massage Gel

FORMULA AT Self-invertible inverse latex (2): 3.5% Water: 20.0% B Dye: 2 drops / 100 g Water: qs VS Alcohol: 10% Menthol: 0.10% D Silicone oil: 5.0%

OPERATIVE MODE

Add B to A; then add to the mixture, C then D

Example 14: massage care gel

FORMULA AT Self-invertible inverse latex (3): 3.00% Water: 30% B SEPICIDE ™ Cl: 0.20% SEPICIDE ™ HB: 0.30% Perfume: 0.05% VS dye: qs Water: q.s. 100% D MICROPEARL ™ SQL: 5.0% LANOL ™ 1688: 2%

FASHION OPERATION

Prepare A; add B, then C, then D.

Example 15: Radiance Gel

FORMULA AT Self-invertible inverse latex (4): 4% Water: 30% B ELASTINE HPM: 5.0% VS MICROPEARL ™ M 100: 3% Water: 5% D SEPICIDE ™ CI: 0.2% SEPICIDE ™ HB: 0.3% Perfume: 0.06% Pyrolidinon 50% sodium carboxylate: 1% Water: q.s. 100%

OPERATIVE MODE

Prepare A; add B, then C, then D.

Example 16: Body Milk

FORMULA AT SEPIPERL ™ N: 3.0% Glycerol triheptonate: 10.0% B Water: q.s. 100% VS Self-reversing inverse latex (1): 1.0% D Perfume: qs Conservative: qs

OPERATIVE MODE

Melt A at about 75 ° C. Emulsify B in A at 75 ° C then add C to 60 ° C, then D.

EXAMPLE 17 Cleansing Emulsion with Sweet Almond Oil

FORMULA MONTANOV ™ 68: 5% Sweet almond oil: 5% Water: q.s. 100% Self-invertible inverse latex (4): 0.3% Glycerin: 5% Conservative: 0.2% Perfume: 0.3%

Example 18: moisturizing cream for oily skin

FORMULA MONTANOV ™ 68: 5% Cetylstearyl octanoate: ² 8% Octyle palmitate: 2% Water: q.s. 100% Self-invertible inverse latex (3): 0.6% MICROPEARL ™ M 100: 3.0% Mucopolysaccharides: 5% SEPICIDE ™ HB: 0.8% Perfume: 0.3%

Example 19: After-shave balm soothing without alcohol

FORMULA Mixture of N-lauryl amino acids: 0.1% to 5% Aspartate of magnesium and potassium: 0.002% to 0.5% LANOL ™ 99: 2% Sweet almond oil: 0.5% Water: q.s. 100% Self-invertible inverse latex (2): 3% SEPICIDE ™ HB: 0.3% SEPICIDE ™ Cl: 0.2% Perfume: 0.4%

Example 20: Cream with AHA for sensitive skin

FORMULA Mixture of N-lauryl amino acids: 0.1% to 5% Aspartate of magnesium and potassium: 0.002% to 0.5% LANOL ™ 99: 2% MONTANOV ™ 68: 5.0% Water: q.s. 100% Self-reversing inverse latex (1): 1.50% Gluconic acid: 1.50% Triethanolamine: 0.9% SEPICIDE ™ NB: 0.3% SEPICIDE ™ Cl: 0.2% Perfume: 0.4%

Example 21: Soothing after-sun care

FORMULA Mixture of N-lauryl amino acids: 0.1% to 5% Aspartate of magnesium and potassium: 0.002% to 0.5% LANOL ™ 99: 10.0% Water: q.s. 100% Self-invertible inverse latex (4): 2.50% SEPICIDE ™ HB: 0.3% SEPICIDE ™ CI: 0.2% Perfume: 0.4% Coloring: 0.03%

Example 22: Cleansing Milk

FORMULA SEPIPERL ™ N: 3% PRIMOL ™ 352: 8.0% Sweet almond oil: 2% Water: q.s. 100% Self-invertible inverse latex (3): 0.8% Conservative: 0.2%

Example 23: Body Milk

FORMULA SEPIPERL ™ N: 3.5% LANOL ™ 37T: 8.0% SOLAGUM ™ L: 0.05% Water: q.s. 100% Benzophenone: 2.0% Dimethicone 350 cPs: 0.05% Self-reversing inverse latex (1): 0.8% Conservative: 0.2% Perfume: 0.4%

EXAMPLE 24 Fluid Emulsion with Alkaline pH

MARCOL ™ 82: 5.0% NaOH 10.0% Water: q.s. 100% Self-invertible inverse latex (2): 1.5% LANOL ™ 84D: 8.0% LANOL ™ 99: 5.0% Water: q.s. 100% Pigments and mineral fillers: 10.0% Self-invertible inverse latex (3): 1.2% Conservative: 0.2% Perfume: 0.4%

Example 25: Solar milk

FORMULA SEPIPERL ™ N: 3.5% LANOL ™ 37T: 10.0% PARSOL ™ NOX: 5.0% EUSOLEX ™ 4360: 2.0% Water: q.s. 100% Self-invertible inverse latex (4): 1.8% Conservative: 0.2% Perfume: 0.4%

Example 26: Eye contour gel

FORMULA Self-reversing inverse latex (1): 2.0% Perfume: 0.06% pyrrolidinonecarboxylate sodium: 0.2% DOW CORNING ™ 245 FLuid: 2.0% Water: q.s. 100%

Example 27: Care composition not rinsed

FORMULA Self-invertible inverse latex (2): 1.5% Perfume: qs Conservative: qs DOW CORNING ™ X2 8360: 5.0% DOW CORNING ™ Q2 1401: 15.0% Water: q.s. 100%

Example 28: Slimming gel

Self-invertible inverse latex (4): 5% Ethanol: 30% Menthol: 0.1% Caffeine: 2.5% Ruscus extract: 2% Ivy extract: 2% SEPICIDE ™ HB: 1% Water: q.s. 100%

Example 29: Soothing after-shave balm without alcohol

FORMULA AT LIPACIDE ™ PVB: 1.0% LANOL ™ 99: 2.0% Sweet almond oil: 0.5% B Self-invertible inverse latex (3): 3.5% VS Water: q.s. 100% D Perfume: 0.4% SEPICIDE ™ HB: 0.4% SEPICIDE ™ CI: 0.2%

Example 30: Aftershave Refreshing Gel

FORMULA LIPACIDE ™ PVB: 0.5% LANOL ™ 99: 5.0% Self-invertible inverse latex (2): 2.5% B water: q.s. 100% VS MICROPEARL ™ LM: 0.5% Perfume: 0.2% SEPICIDE ™ HB: 0.3% SEPICIDE ™ CI: 0.2%

Example 31: Care for oily skin

FORMULA AT MICROPEARL ™ M310: 1.0% Self-invertible inverse latex (4): 5.0% Octyl isononanoate: 4.0% B Water: q.s. 100% VS SEPICONTROL ™ A5: 4.0% Perfume: 0.1% SEPICIDE ™ HB: 0.3% SEPICIDE ™ CI: 0.2% D CAPIGEL ™ 98: 0.5% Water: 10%

Example 32: Cream with AHA

FORMULA AT MONTANOV ™ 68: 5.0% LIPACIDE ™ PVB: 1.05% LANOL ™ 99: 10.0% B Water: q.s. 100% Gluconic acid: 1.5% Triethanolamine: 0.9% VS Self-reversing inverse latex (1): 1.5% D Perfume: 0.4% SEPICIDE ™ HB: 0.2% SEPICIDE ™ CI: 0.4%

Example 33: Non-greasy tanning for face and body

FORMULA AT LANOL ™ 2681: 3.0% Self-reversing inverse latex (4) 2.5% B Water: q.s. 100% Dihydroxyacetone: 3.0% VS Perfume: 0.2% SEPICIDE ™ HB: 0.8% Sodium hydroxide : qs.pH = 5

Example 34: Solar milk with Tahiti monoï

FORMULA AT Monoi of Tahiti: 10% LIPACIDE ™ PVB: 0.5% Self-invertible inverse latex (2): 2.2% B Water: q.s. 100% VS Perfume: 0.1% SEPICIDE ™ HB: 0.3% SEPICIDE ™ Cl: 0.1% Octyl methoxycinnamate: 4.0%

Example 35: Sun Care for the Face

FORMULA AT Cyclomethicone and dimethiconol: 4.0% Self-invertible inverse latex (3): 3.5% B Water: q.s. 100% VS Perfume: 0.1% SEPICIDE ™ HB: 0.3% SEPICIDE ™ CI: 0.21% Octyl methoxycinnamate: 5.0% Micatitane: 2.0% Lactic acid : q.s.p. 6.5

Example 36 Bronzing emulsion without sun

FORMULA AT LANOL ™ 99: 15% MONTANOV ™ 68: 5.0% Octyl paraethoxycinnamate: 3.0% B Water: q.s. 100% Dihydroxyacetone: 5.0% Monosodium phosphate: 0.2% VS Self-invertible inverse latex (4): 0.5% D Perfume: 0.3% SEPICIDE ™ HB: 0.8% Sodium hydroxide : qs pH 7.5.

Example 37: Shine gel

Self-reversing inverse latex (1): 1.5% Volatile silicone: 25% Monopropylene glycol: 25% Demineralized Water : 10% Glycerin: qsp.100%

Example 38: Slimming gel

Self-invertible inverse latex (2): 1.5% Isononyl isononanoate: 2% Caffeine: 5% Ethanol: 40% MICROPEARL ™ LM: 2% Demineralized Water : qs. 100% Conservative perfume: qs

Example 39: Cleansing Milk

SIMULSOL ™ 165: 4% MONTANOV ™ 202: 1% Caprylate-caprate triglyceride: 15% PECOSIL ™ DCT: 1% Demineralized Water: qs. 100% CAPIGEL ™ 98: 0.5% Self-invertible inverse latex (3): 1% PROTEOL ™ OAT: 2% Sodium hydroxide : qsp pH = 7

Example 40: Cream mask "rinse off" restructuring for stressed and weakened hair

FORMULA KETROL ™ T: 0.5% PECOSIL ™ SPP50: 0.75% N-cocoyl amino acids: 0.70% Butylene glycol: 3.0% Self-reversing inverse latex (1): 3.0% MONTANOV ™ 82: 3.0% Jojoba oil : 1.0% LANOL ™ P: 6.0% AMONYL ™ DM: 1.0% LANOL ™ 99: 5.0% SEPICIDE ™ HB 0.3% SEPICIDE ™ CI: 0.2% Perfume: 0.2% Water: qs 100%

Example 41: Sunscreen

SIMULSOL ™ 165: 3% MONTANOV ™ 202: 2% Benzoate C12-C15: 8% PECOSIL ™ PS 100: 2% Dimethicone: 2% Cyclomethicone: 5% octyl para-methoxy cinnamate: 6% Benzophenone-3: 4% Titanium oxide: 8% Xanthan gum : 0.2% Butylene glycol: 5% Demineralized Water: qs. 100% Self-invertible inverse latex (2): 1.5% Conservative, perfume: qs

EXAMPLE 42 Mixed Skin Care Gel

Self-invertible inverse latex (3): 4% Vegetal squalane: 5% Dimethicone: 1.5% SEPICONTROL ™ A5: 4% Xanthan gum : 0.3% Water: qsp.100% Conservative, Perfume: qs.

Example 43: Hair Lotion

FORMULA Butylene glycol: 3.0% Self-invertible inverse latex (4): 3% SIMULSOL ™ 1293: 3.0% Lactic acid : qs. pH = 6 SEPICIDE ™ HB: 0.2% SEPICIDE ™ C1: 0.3% Perfume: 0.3% Water: QSP. 100%

Example 44: Protective and relaxing shampoo

FORMULA Amonyl ™ 675 SB: 5.0% Sodium lauryl ether sulfate 28%: 35.0% Composition of Example 1: 3.0% SEPICIDE ™ HB: 0.5% SEPICIDE ™ CI: 0.3% Sodium hydroxide : QS pH = 7.2 Perfume: 0.3% Dye (FDC blue 1 / yellow 5): QS Water: 100% QSP

Example 45: Protector "leave-on"; Anti stress treatment for hair

FORMULA KETROL ™ T: 0.5% mixture of cocoyl amino acids: 3.0% Butylene glycol: 5.0% DC 1501: 5.0% composition of example 2: 4.0% SEPICIDE ™ HB: 0.5% SEPIC1DE ™ CI: 0.3% Perfume: 0.3% Water: 100% QSP

Example 46: Vitamin Cream

SIMULSOL ™ 165: 5% MONTANOV ™ 202: 1% Caprylic / capric triglycerides: 20% Vitamin A palmitate: 0.2% Vitamin E acetate: 1% MICROPEARL ™ M 305: 1.5% Composition of Example 3: 2% Water: qsp 100% Conservative, perfume: qs

The definitions of the commercial products used in the examples are the following: SIMULSOL ™ 1293 is hydrogenated and polyethoxylated castor oil, with an ethoxylation index equal to 40, sold by the company SEPPIC.
CAPIGEL ™ 98 is a liquid thickener based on acrylate copolymer marketed by the company SEPPIC.
KETROL ™ T is xanthan gum marketed by the company KELCO. LANOL ™ 99 is isononyl isononanoate marketed by the company SEPPIC.
DC1501 is a mixture of cyclopentasiloxane and dimethiconol marketed by Dow Chemical.
MONTANOV ™ 82 is an emulsifier based on cetearyl alcohol and cocoylglucos ide.
MONTANOV ™ 68 (cetearyl glucoside), is a self-emulsifiable composition as described in WO 92/06778 marketed by the company SEPPIC.
The MICROPEARL ™ M 100 is an ultra-fine powder with a very soft touch and mattifying action marketed by MATSUMO.
SEPICIDE ™ CI, imidazolidine urea, is a preservative marketed by the company SEPPIC.
PEMULEN ™ TR is an acrylic polymer marketed by GOODRICH.
SIMULSOL ™ 165 is self-emulsifiable glycerol stearate marketed by the company SEPPIC.
LANOL ™ 1688 is an emollient non-fat ester marketed by the company SEPPIC.
LANOL ™ 14M and LANOL S are consistency factors marketed by the company SEPPIC.
SEPICIDE ™ HB, which is a mixture of phenoxy ethanol, methyl paraben, ethyl paraben, propyl paraben and butyl paraben, is a preservative marketed by the company SEPPIC.
MONTEINE ™ CA is a moisturizing agent marketed by the company SEPPIC.
SCHERCEMOL ™ OP is a non-greasy emollient ester.
LANOL ™ P is a stabilizing additive marketed by the company SEPPIC.
PARSOL ™ MCX is octyl (para-methoxy) cinnamate; marketed by GIVAUDAN.
SEPIPERL ™ N is a pearlescent agent, sold by the company SEPPIC, based on a mixture of alkyl polyglucosides such as those described in US Pat. WO 95/13863 .
MICROPEARL ™ SQL is a mixture of micro particles containing squalane which is released by the action of massage; it is marketed by MATSUMO.
LANOL ™ 99 is isononyl isononanoate marketed by the company SEPPIC.
LANOL ™ 37T is glycerol triheptanoate, marketed by the company SEPPIC.
SOLAGUM ™ L is a carrageenan marketed by the company SEPPIC.
MARCOL ™ 82 is a paraffin oil marketed by the company EXXON. LA-NOL ™ 84D is dioctyl malate marketed by the company SEPPIC. PARSOL NOX ™ is a sunscreen marketed by the company GIVAUDAN.
EUSOLEX ™ 4360 is a solar filter marketed by MERCK.
DOW CORNING ™ 245 Fluid is cyclomethicone sold by the company Dow Corning.
LIPACIDE ™ PVB is a hydrolyzate of acyl wheat proteins marketed by the company SEPPIC.
MICROPEARL ™ LM is a mixture of squalane, polymethylmethacrylate and menthol, marketed by the company SEPPIC.
SEPICONTROL ™ A5 is a mixture of capryloyl glycine, sarcosine and cinnamon zylanicum extract marketed by the company SEPPIC, such as those described in the international patent application. PCT / FR98 / 01313 filed on June 23, 1998 .
LANOL ™ 2681 is a caprylate mixture, copra caprate, marketed by the company SEPPIC.
MONTANOV ™ 202, is an APG / fatty alcohol composition as described in WO998 / 47610 marketed by the company SEPPIC.

Claims (16)

1. Composition in the form of a self-invertible inverse latex comprising, for 100 % of its weight:

   a) - from 50 wt.% to 70 wt.% of a cross-linked anionic polyelectrolyte (P) obtained by polymerisation:

   - of at least one neutral monomer of formula (I):

   

   in which the radical R1 represents a linear or branched aliphatic radical comprising from 8 to 20 carbon atoms and n represents a number greater than or equal to one and less than or equal to thirty;

   - of at least one neutral monomer selected from acrylamide, N,N-dimethylacrylamide, N-[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]propenamide [or tris(hydroxy-methyl)acrylamidomethane or N-[tris(hydroxymethyl)-methyl]acrylamide, also known as THAM] or (2-hydroxyethyl) acrylate; and

   - of at least one monomer comprising a strong acid function and/or of at least one monomer comprising a weak acid function;

   b) - from 4 wt.% to 10 wt.% of an emulsifying system (S₁) of water-in-oil (W/O) type;

   c) - from 1 wt.% to 10 wt.% of an emulsifying system (S₂) of oil-in-water (O/W) type comprising a non-zero proportion by weight of a surfactant composition (C), said surfactant composition (C) comprising, for 100 mol.%:

   1) - a proportion of greater than or equal to 10 mol.% and of less than or equal to 50 mol.% of a composition (C_II) comprising, per 100 mol.%:

   α) - from 60 mol.% to 100 mol.% of a compound of formula (II):

   

   in which:

   - R2 represents a linear or branched alkyl radical comprising 12 carbon atoms,

   - T₁ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m1-H radical in which m1 is an integer greater than or equal to zero and less than or equal to ten,

   - T₂, which is identical to or different from T₁, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m2-H radical in which m2 is an integer greater than or equal to zero and less than or equal to ten, and

   - T₃, which is identical to or different from T₁ and T₂, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m3-H radical in which m3 is an integer greater than or equal to zero and less than or equal to ten,

   - it being understood that the sum m1+m2+m3 is greater than 0 and less than or equal to ten;

   β) - optionally up to 40 mol.% of a compound of formula (II'):

   

   in which:

   - R'₂ represents a linear or branched alkyl radical comprising 14 carbon atoms,

   - T'₁ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m1-H radical in which m1 is an integer greater than or equal to zero and less than or equal to ten,

   - T'₂, which is identical to or different from T'₁, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m2-H radical in which m2 is an integer greater than or equal to zero and less than or equal to ten, and

   - T'₃, which is identical to or different from T'₁ and T'₂, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m3-H radical in which m3 is an integer greater than or equal to zero and less than or equal to ten,

   - it being understood that the sum m1 +m2+m3 is greater than 0 and less than or equal to ten; and

   γ) - optionally up to 10 mol.% of a compound of formula (II"):

   

   in which:

   - R"₂ represents a linear or branched alkyl radical comprising 16 carbon atoms,

   - T"₁ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m1-H radical in which m1 is an integer greater than or equal to zero and less than or equal to ten,

   - T"₂, which is identical to or different from T"₁, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m2-H radical in which m2 is an integer greater than or equal to zero and less than or equal to ten, and

   - T"₃, which is identical to or different from T"₁ and T"₂, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m3-H radical in which m3 is an integer greater than or equal to zero and less than or equal to ten,

   - it being understood that the sum m1+m2+m3 is greater than 0 and less than or equal to ten;

   2) - a proportion of greater than or equal to 50 mol.% and of less than or equal to 90 mol.% of a composition (C_III) comprising, per 100 mol.%:

   α) - from 60 mol.% to 100 mol.% of a compound of formula (III):

   

   or of its isomer of formula (IV):

   

   or of the mixture of these two isomers,
   in which formulae (III) and (IV):

   - R₂ represents a linear or branched alkyl radical comprising 12 carbon atoms,

   - T₄ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m4-H radical in which m4 is an integer greater than or equal to zero and less than or equal to ten,

   - T₅, which is identical to or different from T₄, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m5-H radical in which m5 is an integer greater than or equal to zero and less than or equal to ten,

   - T₆, which is identical to or different from T₄ and T₅, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m6-H radical in which m6 is an integer greater than or equal to zero and less than or equal to ten,

   - T₇, which is identical to or different from T₄, T₅ and T₆, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m7-H radical in which m7 is an integer greater than or equal to zero and less than or equal to ten, it being understood that the sum m4+m5+m6+m7 is greater than 0 and less than or equal to ten;

   β) - optionally up to 40 mol.% of a compound of formula (III'):

   

   or of its isomer of formula (IV'):

   

   or of the mixture of these two isomers,
   in which formulae (III') and (IV'):

   - R'₂ represents a linear or branched alkyl radical comprising 14 carbon atoms,

   - T'₄ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m4-H radical in which m4 is an integer greater than or equal to zero and less than or equal to ten,

   - T'₅, which is identical to or different from T'₄, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m5-H radical in which m5 is an integer greater than or equal to zero and less than or equal to ten,

   - T'₆, which is identical to or different from T'₄ and T'₅, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m6-H radical in which m6 is an integer greater than or equal to zero and less than or equal to ten, and

   - T'₇, which is identical to or different from T'₄, T'₅ and T'₆, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m7-H radical in which m7 is an integer greater than or equal to zero and less than or equal to ten,

   - it being understood that the sum m4+m5+m6+m7 is greater than 0 and less than or equal to ten; and

   γ) - optionally up to 10 mol.% of a compound of formula (III"):

   

   or of its isomer of formula (IV"):

   

   or of the mixture of these two isomers,
   in which formulae (III") and (IV"):

   - R"₂ represents a linear or branched alkyl radical comprising 16 carbon atoms,

   - T"₄ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m4-H radical in which m4 is an integer greater than or equal to zero and less than or equal to ten,

   - T"₅, which is identical to or different from T"₄, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m5-H radical in which m5 is an integer greater than or equal to zero and less than or equal to ten,

   - T"₆, which is identical to or different from T"₄ and T"₅, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m6-H radical in which m6 is an integer greater than or equal to zero and less than or equal to ten, and

   - T"₇, which is identical to or different from T"₄, T"₅ and T"₆, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m7-H radical in which m7 is an integer greater than or equal to zero and less than or equal to ten,

   - it being understood that the sum m4+m5+m6+m7 is greater than 0 and less than or equal to ten;

   d) - from 15 wt.% to 45 wt.% of at least one oil, and

   e) - from 0 wt.% to 5 wt.% of water.
2. Composition according to claim 1, wherein, in formula (I), the radical R1 represents a lauryl radical or a stearyl radical.
3. Composition according to either claim 1 or claim 2, wherein, in formula (I), n is greater than or equal to two and less than or equal to twenty.
4. Composition according to any of claims 1 to 3, wherein, in the polyelectrolyte P, the monomer units comprising a strong acid function result from 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid partially or completely salified as sodium salt, as potassium salt or as ammonium salt and the monomer units comprising a weak acid function result from acrylic acid or from methacrylic acid partially salified as sodium salt, as potassium salt or as ammonium salt.
5. Composition according to any of claims 1 to 4, wherein the polyelectrolyte P comprises, in mole percent, from 0.5 % to 10 % of a monomer unit resulting from the monomer of formula (I) as defined above.
6. Composition according to any of claims 1 to 5, wherein said surfactant composition (C) additionally comprises:

   3) - up to 5 mol.% of a composition (C_V) comprising, per 100 mol.%:

   α) - from 60 mol.% to 100 mol.% of a compound of formula (V):

   

   in which:

   - R2 represents a linear or branched alkyl radical comprising 12 carbon atoms,

   - T₈ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m8-H radical in which m8 is an integer greater than or equal to zero and less than or equal to ten,

   - T₉, which is identical to or different from T₈, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m9-H radical in which m9 is an integer greater than or equal to zero and less than or equal to ten, and

   - it being understood that the sum m8+m9 is greater than 0 and less than or equal to ten;

   β) - optionally up to 40 mol.% of a compound of formula (V'):

   

   in which:

   - R'₂ represents a linear or branched alkyl radical comprising 14 carbon atoms,

   - T'₈ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m8-H radical in which m8 is an integer greater than or equal to zero and less than or equal to ten,

   - T'₉, which is identical to or different from T'₈, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m9-H radical in which m9 is an integer greater than or equal to zero and less than or equal to ten, and

   - it being understood that the sum m8+m9 is greater than 0 and less than or equal to ten; and

   γ) - optionally up to 10 mol.% of a compound of formula (V"):

   

   in which:

   - R"₂ represents a linear or branched alkyl radical comprising 16 carbon atoms,

   - T"₈ represents a hydrogen atom or a (-CH₂-CH₂-O-)_m8-H radical in which m8 is an integer greater than or equal to zero and less than or equal to ten,

   - T"₉, which is identical to or different from T"₈, represents a hydrogen atom or a (-CH₂-CH₂-O-)_m9-H radical in which m9 is an integer greater than or equal to zero and less than or equal to ten, and

   - it being understood that the sum m8+m9 is greater than 0 and less than or equal to ten.
7. Composition according to any of claims 1 to 6, wherein said surfactant composition (C) additionally comprises:

   4) - up to 5 mol.% of a composition (C_VI) comprising, per 100 mol.%:

   α) - from 60 mol.% to 100 mol.% of a compound of formula (VI):
   
           R2-(-CH₂-CH₂-O-)_m10-H     (VI),
   
   in which R2 represents a linear or branched alkyl radical comprising 12 carbon atoms and m10 is an integer greater than or equal to zero and less than or equal to ten;

   β) - optionally up to 40 mol.% of a compound of formula (VI'):
   
           R'₂-(-CH₂-CH₂-O-)_m10-H     (VI'),
   
   in which R'₂ represents a linear or branched alkyl radical comprising 14 carbon atoms and m10 is an integer greater than or equal to zero and less than or equal to ten; and

   γ) - optionally up to 10 mol.% of a compound of formula (VI"):
   
           R"₂-(-CH₂-CH₂-O-)_m10-H     (VI"),
   
   in which R"₂ represents a linear or branched alkyl radical comprising 16 carbon atoms and m10 is an integer greater than or equal to zero and less than or equal to ten.
8. Composition according to any of claims 1 to 7, wherein said surfactant composition (C) comprises:

   1) - a proportion of greater than or equal to 20 mol.% and of less than or equal to 50 mol.% of a composition (C_II) as defined above;

   2) - a proportion of greater than or equal to 50 mol.% and of less than or equal to 80 mol.% of a composition (C_III) as defined above.
9. Composition according to any of claims 1 to 8, wherein, in said surfactant composition (C):

   1) - said composition (C_II) comprises, per 100 mol.%:

   α) - from 60 mol.% to 80 mol.% of the compound of formula (II),

   β) - from 15 mol.% to 30 mol.% of the compound of formula (II'), and

   γ) - up to 10 mol.% of the compound of formula (II"), and

   2) - said composition (C_III) comprises, per 100 mol.%:

   α) - from 60 mol.% to 80 mol.% of the compound of formula (III), of its isomer of formula (IV) or of the mixture of these isomers,

   β) - from 15 mol.% to 30 mol.% of the compound of formula (III'), of its isomer of formula (IV') or of the mixture of these isomers, and

   γ) - up to 10 mol.% of the compound of formula (III"), of its isomer of formula (IV") or of the mixture of these isomers.
10. Composition according to any of claims 1 to 9, wherein said emulsifying system (S₂) of oil-in-water (O/W) type consists of 100 wt.% of said surfactant composition (C).
11. Composition according to any of claims 1 to 10, wherein said emulsifying system (S₂) of oil-in-water (O/W) type comprises, per 100 % of its weight:

    - from 10 wt.% to 40 wt.% of heptaethoxylated lauryl alcohol and

    - from 60 wt.% to 90 wt.% of said surfactant composition (C).
12. Composition according to any of claims 1 to 11, wherein, in the polyelectrolyte (P), the monomer unit resulting from the monomer of formula (I) is a monomer unit resulting from tetraethoxylated lauryl acrylate.
13. Composition according to claim 12, wherein the polyelectrolyte (P) is selected from:

    - cross-linked copolymers of acrylic acid partially salified in the sodium salt or ammonium salt form, of acrylamide and of tetraethoxylated lauryl acrylate;

    - cross-linked copolymers of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid partially salified in the sodium salt or ammonium salt form, of acrylamide and of tetraethoxylated lauryl acrylate;

    - cross-linked copolymers of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid partially salified in the sodium salt or ammonium salt form, of 2-hydroxyethyl acrylate and of tetraethoxylated lauryl acrylate;

    - cross-linked copolymers of acrylamide, of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid, of acrylic acid partially salified in the sodium salt or ammonium salt form and of tetraethoxylated lauryl acrylate;

    - copolymers of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid partially salified in the sodium salt or ammonium salt form, of acrylamide, of vinylpyrrolidone and of tetraethoxylated lauryl acrylate; and

    - cross-linked copolymers of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid partially or completely salified in the sodium salt form, of acrylic acid partially salified in the sodium salt or ammonium salt form, of 2-hydroxyethyl acrylate, of tris(hydroxymethyl)aminomethyl acrylamide and of tetraethoxylated lauryl acrylate.
14. Composition according to any of claims 1 to 13, wherein the cross-linked anionic polyelectrolyte (P) comprises, per 100 % of monomers used:

    - from 40 mol.% to 80 mol.% of monomer units resulting from a monomer comprising a strong acid function;

    - from 15 mol.% to 55 mol.% of monomer units resulting from a neutral monomer other than the compound of formula (I) as defined above;

    - from 1 mol.% to 5 mol.% of monomer units resulting from a monomer of formula (I) as defined above.
15. Use of the composition according to any of claims 1 to 14 as a thickening and/or emulsifying agent for preparing a cosmetic, dermopharmaceutical or pharmaceutical topical composition.
16. Cosmetic, dermopharmaceutical or pharmaceutical topical composition, characterised in that it comprises, as a thickening and/or emulsifying agent, an effective amount of the composition according to any of claims 1 to 14.